KR19990037703A - Device for checking resistance of load connected to transformer - Google Patents
Device for checking resistance of load connected to transformer Download PDFInfo
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- KR19990037703A KR19990037703A KR1019980701182A KR19980701182A KR19990037703A KR 19990037703 A KR19990037703 A KR 19990037703A KR 1019980701182 A KR1019980701182 A KR 1019980701182A KR 19980701182 A KR19980701182 A KR 19980701182A KR 19990037703 A KR19990037703 A KR 19990037703A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
- B60R21/017—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including arrangements for providing electric power to safety arrangements or their actuating means, e.g. to pyrotechnic fuses or electro-mechanic valves
- B60R21/0173—Diagnostic or recording means therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
- B60R16/027—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems between relatively movable parts of the vehicle, e.g. between steering wheel and column
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/282—Testing of electronic circuits specially adapted for particular applications not provided for elsewhere
- G01R31/2829—Testing of circuits in sensor or actuator systems
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/005—Testing of electric installations on transport means
- G01R31/006—Testing of electric installations on transport means on road vehicles, e.g. automobiles or trucks
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Air Bags (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
간단한 회로수단에 의해 실현가능한 장치에 의하면, 측정 저항(Rm)이 설치되어 있고, 이 측정저항은 부하(Rz)에 부가하여 접속가능하며, 혹은 부하 대신에 접속가능하다. 또한 수단(SS, PS)이 설치되어 있고, 이 수단은 측정 저항(Rm)의 접속에 의해 발생하는 저항치의 변화를 검출하고, 그러한 저항치의 변화가 미리 정해진 값과 상이하면 통보한다.According to an apparatus which can be realized by a simple circuit means, a measuring resistor Rm is provided, and the measuring resistor can be connected to the load Rz or connected instead of the load. Further, means (SS, PS) are provided, and the means detects a change in the resistance value generated by the connection of the measurement resistor Rm, and notifies if the change in the resistance value is different from a predetermined value.
Description
이런 종류의 장치는, 독일 특허출원 DE 38 12 633 A1 에 의해 공지되어 있다. 이 종래기술에 의하면, 예를 들어 제어장치와 차량의 핸들에 조립된 에어백 사이에서의 신호전송을 위해, 로터리 트랜스가 사용되고 있다. 이 경우, 에어백이 어떠한 긴급사태에서도 즉시 기동할 준비가 되어 있도록 할 목적에서, 그것이 정확히 기능하는지에 대해 항상 검사된다. 이 때문에, 1.8Ω 내지 2.5Ω의 범위에 있어야 할 점화제의 저항이 끊어지지 않고 반복되는 측정에 이용된다. 로터리 트랜스에서의 유도 결합된 권선에 의한 신호의 전달은, 양쪽 권선의 간격 즉 권선의 항아리형 코어 사이에서의 공극의 크기에 의존하여 행해진다. 로터리 트랜스 2차측의 항아리형 코어가 장착되어 있는 핸들의 조립 오차 및 제조 오차에 의해, 측정되는 점화제 저항치가 잘못된 것으로 될 가능성이 있다. 이러한 측정신호의 오류를 피하기 위해, 앞서 거론된 종래 기술의 구성에 의하면 로터리 트랜스의 2차측에 발진회로가 설치되어 있고, 이 진동회로에 1차측으로부터 제어신호가 인가된다. 제어신호가 차단된 후, 발진회로에 의한 감쇠된 응답신호가 1차측으로 되돌아가 전달되고, 감쇠된 응답신호의 시정수로부터 2차측의 저항치가 구해진다.An apparatus of this kind is known by German patent application DE 38 12 633 A1. According to this prior art, for example, a rotary transformer is used for signal transmission between a control device and an airbag assembled to a steering wheel of a vehicle. In this case, the airbag is always checked for its correct function for the purpose of ensuring that the airbag is ready to start immediately in any emergency. For this reason, the resistance of the ignition agent which should be in the range of 1.8 kV to 2.5 kV is used for the repeated measurement without breaking. The transmission of the signal by the inductively coupled windings in the rotary transformer is done depending on the spacing of both windings, ie the size of the voids between the jar-shaped cores of the windings. There is a possibility that the resistance value of the ignition agent to be measured may be wrong due to assembly error and manufacturing error of the handle on which the jar-shaped core on the secondary side of the rotary transformer is mounted. In order to avoid the error of such a measurement signal, according to the structure of the prior art mentioned above, the oscillation circuit is provided in the secondary side of a rotary transformer, and a control signal is applied to this vibration circuit from a primary side. After the control signal is cut off, the attenuated response signal by the oscillation circuit is returned to the primary side, and the resistance value of the secondary side is obtained from the time constant of the attenuated response signal.
본 발명은, 트랜스의 2차측에 접속된 부하의 저항 예를 들면 에어백의 점화제의 저항을 검사하는 장치에 관한 것이다.The present invention relates to an apparatus for checking the resistance of a load connected to the secondary side of a transformer, for example, the resistance of an ignition agent of an airbag.
다음에, 도면에 도시된 두 개의 실시예에 기초하여 본 발명에 대하여 상세히 설명한다. 도1은, 트랜스 2차측에 접속된 부하의 저항치 변화를 규정의 측정저항의 병렬 접속에 의해 포착하기 위한 회로장치를 도시하는 도면이며, 도2는 트랜스 2차측에 접속된 부하의 저항치 변화를, 이 부하 대신에 조립한 접속할수 있는 규정의 측정 저항에 의해 포착하기 위한 회로장치를 도시하는 도면이다.Next, the present invention will be described in detail based on the two embodiments shown in the drawings. 1 is a diagram showing a circuit device for capturing a change in resistance value of a load connected to a transformer secondary side by parallel connection of a prescribed measurement resistance, and FIG. 2 shows a change in resistance value of a load connected to a transformer secondary side, It is a figure which shows the circuit device for capturing by the connecting resistance which can be connected instead of this load.
발명의 이점Advantage of the invention
청구항1에 의하면, 트랜스 2차측에 접속된 부하 예들 들면 에어백의 점화제의 저항치가, 부하에 부가하여 접속할수 있는 규정의 측정저항에 의해 검사된다. 측정저항의 부가적인 접속에 의해 발생하는 2차측의 합성저항의 변화가 검출되고, 이 저항치 변화가 소정의 값에서 멀어져 있을 때, 상응하는 통보가 행해진다. 청구항4에 의하면, 부하로부터 2차측에 추가된 측정저항으로의 전환이 행해진다. 이 때 발생하는 저항치 변화도 마찬가지로 검출되고, 그 저항치 변화가 소정치와 상이하면 부하의 기능 흠결이 통보된다. 이들 청구항1과 4의 쌍방에 기초하여 트랜스 2차측에 접속된 부하의 검사를 위한 해결수단에 필요해지는 것은, 트랜스 2차측에 추가되는 측정저항 뿐이며, 이는 부하에 대해 병렬로 접속될수 있거나 부하 대신에 접속할수 있다. 따라서, 이러한 장치구성은 지극히 적은 회로 코스트로 실현될수 있다. 종속 청구항2, 3, 5에는, 청구항1 또는 4에 의한 장치 구성의 적합한 실시형태가 개시되어 있다.According to claim 1, the resistance value of the load, for example, the ignition agent of the airbag, connected to the secondary side of the transformer is inspected by the prescribed measurement resistance which can be connected in addition to the load. When a change in the synthesis resistance on the secondary side caused by the additional connection of the measurement resistance is detected and the change in the resistance value is far from the predetermined value, corresponding notification is made. According to claim 4, switching from the load to the measurement resistance added to the secondary side is performed. The change in resistance generated at this time is similarly detected, and if the change in resistance is different from the predetermined value, the malfunction of the load is notified. On the basis of both of claims 1 and 4, all that is required for the solution for the inspection of the load connected to the transformer secondary side is the measurement resistance added to the transformer secondary side, which can be connected in parallel to the load or in place of the load. You can connect. Therefore, such a device configuration can be realized at extremely low circuit cost. In dependent claims 2, 3 and 5, preferred embodiments of the device configuration according to claim 1 or 4 are disclosed.
도1에 도시되어 있는 회로는, 제 1 트랜스(U1)를 갖고 있고, 이 트랜스의 2차측에 저항(Rz)을 갖는 부하가 접속되어 있다. 이 트랜스(U1)는 예를 들어 로터리 트랜스이며, 이는 에어백이 장착된 핸들과 고정되어 있는 스티어링 칼럼 사이에 배치되어 있다. 이 경우, 2차측에 접속되어 있는 부하는 에어백의 점화제의 저항(Rz)에 대응하고, 트랜스(U1)의 1차측은 차량 샤시와 연결된 제어장치(SG)와 접속되어 있다. 이 제어장치는 차량의 사고발생시, 에어백의 점화제에 대한 유발신호를 송출한다.The circuit shown in FIG. 1 has a first transformer U1, and a load having a resistance Rz is connected to the secondary side of the transformer. This transformer U1 is for example a rotary transformer, which is arranged between the steering wheel on which the airbag is mounted and the steering column fixed. In this case, the load connected to the secondary side corresponds to the resistance Rz of the ignition agent of the airbag, and the primary side of the transformer U1 is connected to the control device SG connected to the vehicle chassis. This control device sends out a trigger signal for the ignition agent of the airbag in the event of a vehicle accident.
앞서 기술한 바와 같이, 점화제는 (트랜스로부터 점화제로의 도선도 포함) 항상, 동작기능의 확실성에 대해 검사된다. 이 목적으로, 점화제의 저항(Rz)이 소정의 시간 간격으로 반복하여 측정되고, 소정의 값을 유지하고 있는지 아닌지에 대해 감시된다. 이 소정의 저항치로부터의 편차에 의하여, 에어백의 기능에 장해가 있는지가 시사된다. 차량에 있어서는 이러한 상황이 통보되지 않으면 안된다. 점화제의 저항(Rz)의 변화를 높은 신뢰성을 갖고 검출할수 있도록 하기 위하여 측정 저항(Rm)이 설치되어 있고, 이는 유리하게는 스위치(S1)에 의해 점화제 저항(Rz)에 대해 병렬로 접속할수 있다. 이 측정저항(Rm)은 소정의 일정한 저항치를 갖고 있고, 점화제 저항(Rz)의 약 4배 내지 5배의 크기인 것이 바람직하다. 이로 인하여, 스위치가 고장이어서 열수 없게 되버렸을때도, 트랜스(U1)의 2차측에 추가되어 접속된 측정저항(Rm)의 것에서는, 에어백의 트리거시에 점화 에너지의 4분의 1 또는 5분의 1 밖에 손실되지 않고, 그 결과, 점화제에 유도되는 에너지는 어떠한 경우에도 에어갭의 트리거를 위해 충분한 것으로 할수 있게 된다.As described above, the ignition agent (including the lead from the transformer to the ignition agent) is always checked for certainty of the operating function. For this purpose, the resistance Rz of the ignition agent is repeatedly measured at predetermined time intervals and monitored whether or not the predetermined value is maintained. The deviation from this predetermined resistance value suggests that there is an obstacle in the function of the airbag. On vehicles, this situation must be informed. In order to be able to detect the change in the resistance Rz of the ignition agent with high reliability, a measurement resistance Rm is provided, which is advantageously connected in parallel to the ignition agent resistance Rz by the switch S1. can do. This measurement resistance Rm has a predetermined constant resistance value, and is preferably about 4 to 5 times the size of the ignition agent resistance Rz. For this reason, even when the switch fails and cannot be opened, the measured resistance Rm added to the secondary side of the transformer U1 is connected to one fourth or five minutes of the ignition energy when the airbag is triggered. Only one is lost, and as a result, the energy induced in the igniter can in any case be sufficient for triggering the air gap.
측정저항(Rm)을 접속하여 추가하므로써, 2차측에서 트랜스(1)에 접속된 점화제 저항(Rz)과 측정 저항(Rm)으로 이루어지는 합성저항은, 점화제 저항(Rz)이 에어백의 확실한 동작을 보증하는 이미 알려진 값을 갖고 있으면, 완전히 특정화된 값만 변화한다. 측정저항(Rm)을 접속하여 추가하였을때에 저항값의 변화가 그러한 소정의 값과는 상이하면 장해 발생이 통보되게 된다.By connecting and adding the measurement resistance Rm, the synthetic resistance consisting of the ignition agent resistance Rz and the measurement resistance Rm connected to the transformer 1 on the secondary side is a reliable operation of the airbag. If you have a known value that ensures that only a fully specified value is changed. When the measurement resistance Rm is connected and added, if the change in the resistance value is different from the predetermined value, the occurrence of a failure is notified.
결국 이 경우, 점화제 저항(Rz)의 검사는, 측정저항(Rm)을 가끔 부가적으로 접속하고, 그 결과 얻어진 저항값 변화를 검출하므로써 행해진다. 이렇게 하여 부하저항(Rz)의 순수한 포착을 불가능하게 하는 온도 및 기계적인 오차에 의한 악영향을 배제할수 있다.In this case, the inspection of the ignition agent resistance Rz is performed by additionally connecting the measurement resistance Rm from time to time, and detecting the resultant resistance value change. In this way, adverse effects due to temperature and mechanical errors, which make it impossible to purely capture the load resistance Rz, can be eliminated.
예를 들면 핸들에 장착되어 있는 2차측의 회로(SS)에 의해 스위치(S1)가 조작되고, 측정 저항(Rm)의 온/오프 가 행해진다. 회로(SS)는, 제 2 의 로터리 트랜스(U2)를 거쳐 1차측에 접속되어 있는 제어 회로(SG)로부터 스위치 조작을 위한 요구신호를 수취한다. 파선의 신호경로로 도시되어 있듯이, 측정저항(Rm)이 접속되었을때의 2차측의 합성 저항의 측정은, 2차측에 접속된 회로(SS)에 있어서 (예를 들면 저항 측정 브릿지에 의해) 행할수 있다. 그 때, 측정신호를 다시 제 2 의 로터리 트랜스(U2)를 거쳐 제어회로(SG)로 반송할수 있고, 이때 제어회로는 저항 변화가 허용될수 없는 것이면 장해 발생을 통보한다. 두 개의 트랜스를 사용하므로써, 점화회로와 진단회로가 상호 분리되어 있다.For example, the switch S1 is operated by the circuit SS on the secondary side attached to the handle, and the measurement resistance Rm is turned on / off. The circuit SS receives a request signal for switch operation from the control circuit SG connected to the primary side via the second rotary transformer U2. As shown by the broken line signal path, the measurement of the synthesis resistance on the secondary side when the measurement resistance Rm is connected can be performed (for example, by a resistance measurement bridge) in the circuit SS connected to the secondary side. Can be. At that time, the measurement signal can be returned to the control circuit SG via the second rotary transformer U2, at which time the control circuit notifies the occurrence of a failure if the resistance change is unacceptable. By using two transformers, the ignition circuit and the diagnostic circuit are separated from each other.
또한, 측정저항(Rm)의 부가적인 접속에 의한 저항치의 변화는, 트랜스 1차측 회로에서의 전류 변화로서도 구현되게 된다. 트랜스(U1)의 1차회로에 조립되어 있는 회로(PS)는, 측정저항(Rm)이 접속되어 추가되었을 때 1차 전류의 변화를 포착하고, 이것을 제어회로(SG)로 전달한다. 예를 들면 역치를 참조하므로써, 제어회로(SG)는 1차전류의 변화가 소정치와는 상이한지 아닌지를 판정한다. 상이하게 되어 있는 것이라면, 이는 점화제 저항(Rz)의 허용불가능한 변화와 등가이며, 장해발생을 나타내는 신호가 발생되어진다.In addition, the change in the resistance value due to the additional connection of the measurement resistance Rm is also realized as the current change in the transformer primary side circuit. The circuit PS assembled in the primary circuit of the transformer U1 captures the change in the primary current when the measurement resistance Rm is connected and added, and transfers it to the control circuit SG. For example, by referring to the threshold value, the control circuit SG determines whether or not the change in the primary current is different from the predetermined value. If it is to be different, this is equivalent to an unacceptable change in the ignition agent resistance Rz, and a signal indicating the occurrence of a disturbance is generated.
도2에 도시되어 있는 실시예의 경우, 측정저항(Rm)은 점화제 저항(Rz)에 부가하여 접속되지 않고, 스위치(S2)에 의해 점화제 저항(Rz) 대신에 선택적으로 접속된다. 스위치(S2)의 제어는, 상술한 바와 같이 회로(SS,SG)를 거쳐 행해진다. 측정저항(Rm)에 대해, 적정한 동작시의 점화제 저항(Rz)과 동등한 값을 선택하는 것이 좋다. 이렇게 한 경우, 점화제 저항(Rz)으로부터 측정 저항(Rm)으로 전환되어도, 회로(PS)는 트랜스 1차측에서의 전류변화를 검출하지 않는다. 그러나, 1차측 회로의 전류에 변화가 발생하면, 그것으로부터 점화제의 기능 흠결인 것으로 판정된다. 이러한 경우, 제어회로(SG)에 의해 장해 발생이 통보된다. 점화제 저항(Rz)와 동등한 측정 저항을 채용하는 대신에, 이들 저항의 저항치 사이에 미리 정해진 일정한 차이 또는 일정한 비가 있도록 할수도 있다. 이 때, 점화제 저항(Rz)이 측정 저항(Rm)으로 전환되면, 트랜스(U1)의 1차 회로에서의 전류도 마찬가지로 완전히 특정해진 변화를 받게 된다. 제어회로(SG)에서는 역시 역치 판정에 의해, 1차 회로 전류의 이러한 변화가 허용치와는 상이한 것인지 아닌지를 확인할수 있다.In the case of the embodiment shown in Fig. 2, the measurement resistance Rm is not connected in addition to the ignition resistor Rz, but is selectively connected instead of the ignition resistor Rz by the switch S2. Control of the switch S2 is performed via the circuits SS and SG as described above. For the measurement resistance Rm, it is preferable to select a value equivalent to the ignition agent resistance Rz at the time of proper operation. In this case, even when switching from the ignition agent resistance Rz to the measurement resistance Rm, the circuit PS does not detect a current change on the transformer primary side. However, if a change occurs in the current of the primary side circuit, it is determined therefrom as a malfunction of the ignition agent. In this case, the occurrence of the failure is notified by the control circuit SG. Instead of employing a measurement resistance equivalent to the ignition agent resistance Rz, it is also possible to have a predetermined constant difference or constant ratio between the resistance values of these resistors. At this time, when the ignition agent resistance Rz is switched to the measurement resistance Rm, the current in the primary circuit of the transformer U1 also undergoes a completely specified change as well. In the control circuit SG, it is also possible to confirm whether or not this change in the primary circuit current is different from the allowable value by threshold determination.
에어백에서의 적용과는 다르지만, 이제 까지 기술해온 회로를 트랜스의 2차측에 접속된 그 다른 부하 저항을 검사하기 위하여 사용할수도 있으며, 예를 들면 핸들의 것에 배치된 크랙션 혹은 라디오 또는 전화의 조작부재와 같은 부하 저항을 조절하기 위해 사용할수도 있다.Although different from the application in airbags, the circuits described so far can also be used to check other load resistances connected to the secondary side of the transformer, for example on a handle or in a radio or telephone operating member. It can also be used to adjust the load resistance.
Claims (6)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19530587.6 | 1995-08-19 | ||
| DE19530587A DE19530587A1 (en) | 1995-08-19 | 1995-08-19 | Arrangement for checking the resistance of a load connected to a transformer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR19990037703A true KR19990037703A (en) | 1999-05-25 |
| KR100417318B1 KR100417318B1 (en) | 2004-04-08 |
Family
ID=7769921
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR10-1998-0701182A KR100417318B1 (en) | 1995-08-19 | 1996-04-27 | Apparatus for inspecting the resistance of a load connected to a transformer |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US6359450B1 (en) |
| EP (1) | EP0844946B1 (en) |
| JP (1) | JPH11511088A (en) |
| KR (1) | KR100417318B1 (en) |
| DE (2) | DE19530587A1 (en) |
| WO (1) | WO1997006979A2 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19737506C1 (en) * | 1997-08-28 | 1998-11-12 | Sican F & E Gmbh Sibet | Automobile passenger restraint system release control |
| DE19744760C1 (en) * | 1997-10-10 | 1999-03-18 | Bosch Gmbh Robert | Contact less signal transmission device between vehicle steering column and steering wheel |
| WO2001067471A1 (en) * | 2000-03-08 | 2001-09-13 | The Furukawa Electric Co., Ltd. | Method for diagnosing abnormal condition of isolation transformer and device therefor |
| DE10048962B4 (en) * | 2000-10-04 | 2006-12-07 | Omicron Electronics Gmbh | Portable test equipment for testing high voltage and / or high current test samples and test system |
| US7106078B1 (en) * | 2005-08-03 | 2006-09-12 | James G. Biddle Company | Method and apparatus for measuring transformer winding resistance |
| US9684021B2 (en) * | 2013-07-15 | 2017-06-20 | Infineon Technologies Ag | Resistance measurement |
| DE102018218238A1 (en) | 2018-10-24 | 2020-04-30 | Rolls-Royce Deutschland Ltd & Co Kg | Monitoring and tripping of electrical fuses |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2433555A1 (en) * | 1974-07-12 | 1976-01-29 | Poser Erhard | Safety cushion non-contact ignition - uses transformer principle to produce electrical impulse igniting cushion gas generator |
| DE2641581C3 (en) * | 1976-09-13 | 1985-05-09 | Siemens AG, 1000 Berlin und 8000 München | Voltage measuring device for high voltages |
| GB1585067A (en) * | 1976-10-19 | 1981-02-25 | Nat Res Dev | Detection of bacterial activity |
| US4309655A (en) * | 1978-06-23 | 1982-01-05 | Lgz Landis & Gyr Zug Ag | Measuring transformer |
| FR2576109B3 (en) * | 1985-01-16 | 1987-07-10 | Electricite Ste Corbasienne | DEVICE FOR MEASURING AND TRANSMITTING THE VALUE OF AN IMPEDANCE |
| US4810950A (en) * | 1986-07-17 | 1989-03-07 | Ob Products, Inc. | Load resistance measuring technique |
| DE3812633A1 (en) | 1988-04-15 | 1989-10-26 | Daimler Benz Ag | METHOD FOR CONTACTLESS RESISTANCE MEASUREMENT |
| DE3812631C1 (en) * | 1988-04-15 | 1989-04-13 | Daimler-Benz Aktiengesellschaft, 7000 Stuttgart, De | Device for contactless interrogation of the state of electrical switching or triggering means in a motor vehicle |
| US5396172A (en) * | 1993-07-20 | 1995-03-07 | Ontario Hydro | Transformer fault analyzer |
| US6012736A (en) * | 1994-04-26 | 2000-01-11 | Eaton Corporation | Vehicle steering column control system |
| US5636863A (en) * | 1994-04-26 | 1997-06-10 | Eaton Corporation | Vehicle steering column control system |
| US5481198A (en) * | 1994-08-26 | 1996-01-02 | The Georgia Power Company | Method and device for measuring corrosion on a portion of a metallic path carrying an undetermined load current |
| DE19530588A1 (en) * | 1995-08-19 | 1997-02-20 | Bosch Gmbh Robert | Arrangement for controlling the resistance of a load connected to a transformer |
| DE19539064A1 (en) * | 1995-10-20 | 1997-04-24 | Bosch Gmbh Robert | Arrangement for controlling a load connected to a transformer on the secondary side |
| JP3445041B2 (en) * | 1995-11-13 | 2003-09-08 | 三菱電機株式会社 | Semiconductor integrated circuit |
| US5600255A (en) * | 1995-11-20 | 1997-02-04 | Electro-Test, Inc. | Live circuit resistance measurement system and method |
| DE19705430C1 (en) * | 1997-02-13 | 1998-10-01 | Bosch Gmbh Robert | Method for measuring the resistance of a load connected to a rotary transformer and arrangement for carrying out the method |
-
1995
- 1995-08-19 DE DE19530587A patent/DE19530587A1/en not_active Ceased
-
1996
- 1996-04-27 DE DE59607890T patent/DE59607890D1/en not_active Expired - Fee Related
- 1996-04-27 US US09/029,399 patent/US6359450B1/en not_active Expired - Fee Related
- 1996-04-27 JP JP9508796A patent/JPH11511088A/en not_active Ceased
- 1996-04-27 EP EP96911927A patent/EP0844946B1/en not_active Expired - Lifetime
- 1996-04-27 KR KR10-1998-0701182A patent/KR100417318B1/en not_active IP Right Cessation
- 1996-04-27 WO PCT/DE1996/000738 patent/WO1997006979A2/en active IP Right Grant
Also Published As
| Publication number | Publication date |
|---|---|
| JPH11511088A (en) | 1999-09-28 |
| EP0844946B1 (en) | 2001-10-10 |
| US6359450B1 (en) | 2002-03-19 |
| WO1997006979A3 (en) | 1997-03-20 |
| EP0844946A2 (en) | 1998-06-03 |
| KR100417318B1 (en) | 2004-04-08 |
| DE59607890D1 (en) | 2001-11-15 |
| WO1997006979A2 (en) | 1997-02-27 |
| DE19530587A1 (en) | 1997-02-20 |
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